ddos/client.c
author Markus Bröker<broeker.markus@googlemail.com>
Sun, 10 Feb 2019 13:17:01 +0100
changeset 173 374a86886bc5
parent 160 26414889dded
permissions -rw-r--r--
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/**
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 * ddos/client.c
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 * Copyright (C) 2008 Markus Broeker
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#define MAXLEN 80
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int client_write (int client_socket, char *s)
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{
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    return write (client_socket, s, strlen (s));
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}
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int main (int argc, char **argv)
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{
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    char message[MAXLEN + 1];
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    int client_socket;
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    int status;
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    struct addrinfo hints, *result, *rp;
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    memset (&hints, 0, sizeof (struct addrinfo));
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    hints.ai_family = AF_UNSPEC;
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    hints.ai_socktype = SOCK_STREAM;
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    hints.ai_flags = 0;
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    hints.ai_protocol = IPPROTO_TCP;
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    if (getaddrinfo ("localhost", "4000", &hints, &result) != 0) {
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        perror ("getaddrinfo");
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        return -1;
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    }
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    client_socket = -1;
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    for (rp = result; rp != NULL; rp = rp->ai_next) {
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        if ((client_socket = socket (rp->ai_family, rp->ai_socktype, rp->ai_protocol)) == -1)
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            continue;
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        if (connect (client_socket, rp->ai_addr, rp->ai_addrlen) != -1) {
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            break;
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        }
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        close (client_socket);
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        client_socket = -1;
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    }
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    if (result != NULL)
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        freeaddrinfo (result);
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    status = client_write (client_socket, "Hello\r\n");
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    while (client_socket > 0) {
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        status = read (client_socket, message, MAXLEN);
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        if (status > 0) {
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            message[status] = '\0';
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            printf ("SERVER RESPONS: %s", message);
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        } else {
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            perror ("READ");
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            close (client_socket);
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            return 1;
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        }
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    }
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    return close (client_socket);
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}